There is a lot of misunderstanding about this because of incorrect internet information. The size of a low bass wave means it can not be absorbed by carpet. Its mostly for decoupling the subwoofer from the floor, however there are people who may have such thick carpet that may interferes with the drivers travel and clearance spec. That in most cases is an extreme case.

The decoupling the spikes/feet prevents any spurious vibratory noises that may occur. You could also use soft rubber chair stops or felt pads under each foot/spike.

1) Stability: if part of the floor is uneven, this can prevent unwanted buzzing
2) Acoustics: Dr. Hsu says that it improves acoustics--for the same reasons you would use Sonex or sound absorbing foam.
3) Protection: the rug protects the floor, which is also very useful if you want to slide the subwoofer to another position
4) Decoration: you can match the throw rug color to nearby objects.

Will the rug muffle the sound? Well, bass acoustics are very unusual and counterintuitive. Bass is only stopped by dense things like sand, solid wood, or gas filled membranes. Throw rugs have nowhere near the depth to absorb any sound the subwoofer produces.

Basically, the bass goes through the rug, hits the floor, and spreads in every direction inside the room. It is omnidirectional--it goes in every direction even though there is a rug underneath.

A buddy of mine with an STF-3 MK2 and myself with my VTF-3 MK2 both just picked up a Gramma from Auralex to put under our subs and we're both pretty happy with the results. It's also 23" x 15", which is the perfect size for both of our subs.

Technical Support: The best way to get tech support for serious issues is to call or email us. Questions asked on the forum may not be answered by qualified professionals.

No "Flaming": Spiteful talk and flaming wars will lead to "time-outs" for parties involved.

Shootouts: Shootouts are comparisons between products. We need to know about shootouts before allowing them on the forum, so call us and talk to the director of Sales before posting. Otherwise, your shootout may be removed.

Add to Reputation: Once you are a registered member, you can click this icon to add to the tally of other members' Rep Points. You must vote for seven other people before you can vote for the same person twice.

Report Bad Posts: Once you register, click this icon to let Administrators know if they should review a post. Please be specific as to why action might be needed.

HSU RESEARCH IS NOT RESPONSIBLE FOR COMMENTS MADE BY THIRD PARTY INDIVIDUALS ON THIS FORUM.